13562061551 has 4 divisors (see below), whose sum is σ = 13582579704. Its totient is φ = 13541543400.

The previous prime is 13562061533. The next prime is 13562061563. The reversal of 13562061551 is 15516026531.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13562061551 is a prime.

It is a super-2 number, since 2×13562061551² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13562061571) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10258085 + ... + 10259406.

It is an arithmetic number, because the mean of its divisors is an integer number (3395644926).

Almost surely, 2^13562061551 is an apocalyptic number.

13562061551 is a deficient number, since it is larger than the sum of its proper divisors (20518153).

13562061551 is an equidigital number, since it uses as much as digits as its factorization.

13562061551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20518152.

The product of its (nonzero) digits is 27000, while the sum is 35.

The spelling of 13562061551 in words is "thirteen billion, five hundred sixty-two million, sixty-one thousand, five hundred fifty-one".